Hey Shabbychic,
I to am sorry to hear abouth the headaches, when I was pregnant I got the really badly as before I was pregnant I was on medication for migranies.
I spoke to my doctor and he prescribed panadine fort, you would need to speak to your GP or midwife. I did shared care so I spoke to my GP.
I found that when I took a pregnancy multi I felt better also.
I hope that you have a fantastic pregnancy and a safe birth.